[vmqxdv]

As the title said my goal is to do get to or around 500hp and I want it to be as reliable it can be. What mods should I do to make this possible?

Disclaimer: I'm not a mechanic or a tuner and I have only read/view videos about it, I'm asking as a newbie.

The mods I was thinking about was:

1. VRSF downpipes [link]
2. ARM inlets [link]
3. Port injection [link] (I still need to understand it better, any advice is apprecieted)
4. Pure Twin-turbo [link] (I need more clarification about this and if there are cheaper option that will not blow up)
5. Air suspension (I did not choose one yet, advice accepted also if it would be better on coil overs)
6. VRSF 7.5″ Stepped Race Intercooler [link]
7. VRSF Chargepipe Upgrade [link]
8. Brake piston & rotors upgrade (same size as stock, did not choose it yet)
9. M3 rear end & exhaust (Not original, not find it)

Idk if I should upgrade the injectors if the car came with i12, that's why I did not put them on the list, and I also don't know if the fuel pump also need an upgrade.

If I miss anything or there are better quality item lmk!! Thank you in advance!

P.S: I live in Italy

[SlowE92]

Originally Posted by vmqxdv

As the title said my goal is to do get to or around 500hp and I want it to be as reliable it can be. What mods should I do to make this possible?
I'll need to get a loan to buy the car so I wanted to know everything I need to buy so that I how much should I add to the loan to also get the mods!

Disclaimer: I'm not a mechanic or a tuner and I have only read/view videos about it, I'm asking as a newbie.

The mods I was thinking about was:[LIST=1][*]VRSF downpipes [link][*]ARM inlets [link][*]Port injection [link] (I still need to understand it better, any advice is apprecieted)[*]Pure Twin-turbo [link] (I need more clarification about this and if there are cheaper option that will not blow up)[*]Air suspension (I did not choose one yet, advice accepted also if it would be better on coil overs)[*]VRSF 7.5″ Stepped Race Intercooler [...]

Index 12 is the last revision so you wouldnt be able to upgrade them further. If your goal is 500 whp and for it to be reliable, then youll want fbo+ inlets + fuel pump + hybrid turbos.

[lookalikehuuh]

Originally Posted by vmqxdv

As the title said my goal is to do get to or around 500hp and I want it to be as reliable it can be. What mods should I do to make this possible?
I'll need to get a loan to buy the car so I wanted to know everything I need to buy so that I how much should I add to the loan to also get the mods!

Disclaimer: I'm not a mechanic or a tuner and I have only read/view videos about it, I'm asking as a newbie.

The mods I was thinking about was:

1. VRSF downpipes [link]
2. ARM inlets [link]
3. Port injection [link] (I still need to understand it better, any advice is apprecieted)
4. Pure Twin-turbo [link] (I need more clarification about this and if there are cheaper option that will not blow up)
5. Air suspension (I did not choose one yet, advice accepted also if it would be better on coil overs)
6. VRSF 7.5″ Stepped Race Intercooler [link]
7. VRSF Chargepipe Upgrade [link]
8. Brake piston & rotors upgrade (same size as stock, did not choose it yet)
9. M3 rear end & exhaust (Not original, not find it)

Idk if I should upgrade the injectors if the car came with i12, that's why I did not put them on the list, and I also don't know if the fuel pump also need an upgrade.

If I miss anything or there are better quality item lmk!! Thank you in advance!

P.S: I live in Italy

Are you smoking something?

You are taking out a loan to buy a car and modify it pretty heavily and then want it to be reliable at the same time, not only that but doing it on a Banks dime???

#1 335i are not known for their reliability even when fully stock and well taken care of.
#2 the E90 platform is OLD and with as many plastic parts installed on the car many will be failed.
#3 You are assuming you will be getting a perfect specimen of a 335i, most will be far from perfect and likely to require thousands of dollars just to bring the repairs up to proper maintenance standards before starting to modify the car.
#4 you think a bank is going to give you a loan for a car AND the modifications that you are planning to do to their car (because yes its their car until its paid off), which consequently devalues the car, and they will front the costs for that? I really really doubt most if any banks will ever issue you the loan.

Even with the best quality parts once you start pushing the limits on the engines with upgraded Turbos, port injection, and other aftermarket parts there WILL be more issues. You have to realize that even if we give you a price for what the build is now, you will need to have THOUSANDS of dollars in reserves for failures especially if you plan on daily driving this planned car. For example as you push injectors harder (more fuel for longer periods of time) you will need to have $4000 just to do a set of injectors. Another $1500 for the High pressure fuel pump. I assume this is not cash you have readily laying around now since you have to finance an E90.

Anyway, if you can't afford to buy the car, you DEFINITELY can't afford to modify it.

[fastboatster]

Unless you can get vrsf downpipes at a big discount, I wouldn't buy those. Consistently poor fitment, reported by many people and observed myself, though I have an n55.

[vmqxdv]

Originally Posted by lookalikehuuh

Are you smoking something?

You are taking out a loan to buy a car and modify it pretty heavily and then want it to be reliable at the same time, not only that but doing it on a Banks dime???

I appreciate the concern you have and you have really. I know is not know as reliable.

I forgot to mention that I also considered the costs to make it ready for mods.

I can afford the car and most of the mods, but I prefer to dilute the costs, and also I don’t have to specify for what I need those money to the bank.

Thank you again for your concerns!

[vmqxdv]

Originally Posted by fastboatster

Unless you can get vrsf downpipes at a big discount, I wouldn't buy those. Consistently poor fitment, reported by many people and observed myself, though I have an n55.

Do you have any other brand suggestions?

[vmqxdv]

Originally Posted by SlowE92

Index 12 is the last revision so you wouldnt be able to upgrade them further. If your goal is 500 whp and for it to be reliable, then youll want fbo+ inlets + fuel pump + hybrid turbos.

I’ll look into that, thank you!!

[sparkyte]

Hello,

while searching for the car you can check for some that already have the mods, it will be way cheaper to get a modded car even though it can be thrashed if not taken care of. Also are you sure you want this platform to use? What about the 335D which is a way cheaper platform in EU to mod and maintain. The 335i on the other hand is way more expensive on mods, fuel and maintenance especially here where you have to order stuff from abroad and wait for months. Got mine with some mods started already/downpipes, hybrid turbos, valve cover changed, chargepipe, intercooler 7,5/ for like 7k euro then dropped another 7k on simple maintenance and some mods belts, pulleys, water pump + thermostat, DCIs, index 12 injectors, inlets, outlets, then some additional money because one of the turbos was leaking coolant. It was and engine out job as mine is XDRIVE, then had to change hydraulic steering pump, both engine mounts, gaskets, oil pan especially. I've lost it already with the money i dropped on the car but i wouldn't have bothered if i knew what was ahead when i bought it. The car is amazing when everything is working but when there are problems with it its a nightmare. And that's all with me having the money in my account, if i had to borrow from someone or a bank its a BIG NO NO. Good luck as for the mods to 500hp just go FBO with proper parts:

Downpipes, inlets, outlets, 7.5inch intercooler, DCIs, index 12s/you dont need the port injection/, eventually some hybrid turbos/ 17Ts from CHINA if you are on a budget/, proper charge pipe. Then software on the engine and transmission.

Also, forget about the exterior mods until you finish with all the maintenance of the engine and see that the car will be fine to continue modding outside.

[vmqxdv]

Originally Posted by sparkyte

Hello,

while searching for the car you can check for some that already have the mods, it will be way cheaper to get a modded car even though it can be thrashed if not taken care of. Also are you sure you want this platform to use? What about the 335D which is a way cheaper platform in EU to mod and maintain. The 335i on the other hand is way more expensive on mods, fuel and maintenance especially here where you have to order stuff from abroad and wait for months [...]

I've never considered the diesel variant, I'll need to get more info about it!

Originally Posted by sparkyte

[...] if i had to borrow from someone or a bank it's a BIG NO NO. [...]

I wanted to get a loan to buy everything at the same time, but now I think is better go slower so that in case of any complication I can adjust them!

Originally Posted by sparkyte

[...] Good luck as for the mods to 500hp just go FBO with proper parts:

Downpipes, inlets, outlets, 7.5inch intercooler, DCIs, index 12s/you dont need the port injection/, eventually some hybrid turbos/ 17Ts from CHINA if you are on a budget/, proper charge pipe. Then software on the engine and transmission. [...]

Do you have any brands or sites to recommend?

Originally Posted by sparkyte

[...] Also, forget about the exterior mods until you finish with all the maintenance of the engine and see that the car will be fine to continue modding outside.

Yeah those are just to spice up the build when it will be finished!

Anyway, thank you very much for all this advice!!

[sparkyte]

Yeah with simple mods/downpipes, egr delete etc/ you can get the 335d to around 400hp maybe even more, for a lot less money compared to the 335i and also have half of the fuel consumption! I dont know about the regulations in Italy but here everyone is driving straight piped diesels without any issue. : D For sites check ebay, amazon, schmiedmann, fmic . eu. for parts for the n54. I dont know if im allowed to post the sites here but mainly these and some parts you have to order and wait for quite some time. I was even considering exchanging mine for 335d ot 535d mainly due to costs and fuel consumption because 20l+ per 100km 100 octane is not that cheap if you drive it a lot in EU.

[oVeRdOsE.]

500bhp, you might get it very close with FBO only and an aggressive tune.

But it wont last.

No need to have a 7.5 fmic, go with a stepped 5'' is more than enough.

No port injection needed either, stock DI is more than enough. If you want the cooling and cleaning benefit, get a generic meth injection kit.

Those car will break no matter what.

You want ''more'' reliability on an N54, go with a small bottom mount single turbo. speedtech is the way to go. (less heat, less o2 sensors, less plastic, less vacuum hose, less turbo, less shitty wastegate, less boost solenoid issues, less plastic piping, less low end torque etc.) more sound , more fun, more reliable. On the long run it might even be cheaper (considering you want to go with pure TTs )

[vmqxdv]

Originally Posted by sparkyte

Yeah with simple mods/downpipes, egr delete etc/ you can get the 335d to around 400hp maybe even more, for a lot less money compared to the 335i and also have half of the fuel consumption! I dont know about the regulations in Italy but here everyone is driving straight piped diesels without any issue. : D For sites check ebay, amazon, schmiedmann, fmic . eu. for parts for the n54. I dont know if im allowed to post the sites here but mainly these and some parts you have to order and wait for quite some time. I was even considering exchanging mine for 335d ot 535d mainly due to costs and fuel consumption because 20l+ per 100km 100 octane is not that cheap if you drive it a lot in EU.

In Italy you can't modify anything! Is really strict in this case, so is better maintain noise and look as stock as possible. But there are hardcore tuners that don't care about the law and do crazy stuff too, but I don't want to do that

I'm considering the diesel option but I could not find any videos about modification of 335d. Do you know any channel?

[vmqxdv]

Originally Posted by oVeRdOsE.

500bhp, you might get it very close with FBO only and an aggressive tune.

But it wont last.

No need to have a 7.5 fmic, go with a stepped 5'' is more than enough.

No port injection needed either, stock DI is more than enough. If you want the cooling and cleaning benefit, get a generic meth injection kit.

Those car will break no matter what.

You want ''more'' reliability on an N54, go with a small bottom mount single turbo. speedtech is the way to go. (less heat, less o2 sensors, less plastic, less vacuum hose, less turbo, less shitty wastegate, less boost solenoid issues, less plastic piping, less low end torque etc.) more sound , more fun, more reliable. On the long run it might even be cheaper (considering you want to go with pure TTs )

I was thinking about a single turbo too but Idk, Italy is very strict in car modification, so my idea was to make it look as stock as I can.

The pure TTs was because I don't know if there are any other manufactures that will not blow up on me, I lack knowledge.

P.S.: The bottom mount is quite hidden isn't? Maybe I should look in to it!

[sparkyte]

Originally Posted by vmqxdv

In Italy you can't modify anything! Is really strict in this case, so is better maintain noise and look as stock as possible. But there are hardcore tuners that don't care about the law and do crazy stuff too, but I don't want to do that

I'm considering the diesel option but I could not find any videos about modification of 335d. Do you know any channel?

Cheapest will be to find a mint condition 335d with the M57 biturbo engine/ you dont want the N57/ and then do maintenance and stage 1 remap with DPF and EGR in tact you'll be getting a 330-350hp car that does 10l/100km combined consumption. If you want to have the full power of both engines a lot of stuff have to go as its choking the turbos of both engines. You can check the section in this forum for the M57 engines as well, also there are many videos in youtube about modding it. The m57 is really tough and here there are builds going for 600+hp reliably with tons of torque down low/where you usually drive in the city./

[oVeRdOsE.]

Originally Posted by vmqxdv

I was thinking about a single turbo too but Idk, Italy is very strict in car modification, so my idea was to make it look as stock as I can.

The pure TTs was because I don't know if there are any other manufactures that will not blow up on me, I lack knowledge.

P.S.: The bottom mount is quite hidden isn't? Maybe I should look in to it!

yeah, bottom mount are harder to see.

if it's very strict in Italy, you can get a lot of fun with a FBO 335.

- rebuilt the OEM turbo and get a bigger cold side , those are hybrid turbos. They will look exactly like OEM

- catted down pipes.

- water meth injection ; black hose, pump hidden in the front crash bar, use windshield washer tank. Virtually invisible setup.

- valves exhaust, you can find oem variant. but theres a lot of after market option.

- 5'' FMIC

- stock intake with a highflow filter

- MHD stage 2. If you want to push more on a budget get a JB4 back end flash with a do your own tuning. There's some flash file for hybrid turbos.

- do all the maintenance required on a N54.


This is more than enough to get 500bhp on pump gas.

[vmqxdv]

Originally Posted by oVeRdOsE.

yeah, bottom mount are harder to see.

if it's very strict in Italy, you can get a lot of fun with a FBO 335.

- rebuilt the OEM turbo and get a bigger cold side , those are hybrid turbos. They will look exactly like OEM

- catted down pipes.

- water meth injection ; black hose, pump hidden in the front crash bar, use windshield washer tank. Virtually invisible setup.

- valves exhaust, you can find oem variant. but theres a lot of after market option.

- 5'' FMIC

- stock intake with a highflow filter

- MHD stage 2. If you want to push more on a budget get a JB4 back end flash with a do your own tuning. There's some flash file for hybrid turbos.

- do all the maintenance required on a N54.


This is more than enough to get 500bhp on pump gas.

I really appreciate you guys helping me!! 500hp would be the dream but I would be happy even with less if it will last longer!

[vmqxdv]

Originally Posted by sparkyte

Cheapest will be to find a mint condition 335d with the M57 biturbo engine/ you dont want the N57/ and then do maintenance and stage 1 remap with DPF and EGR in tact you'll be getting a 330-350hp car that does 10l/100km combined consumption. If you want to have the full power of both engines a lot of stuff have to go as its choking the turbos of both engines. You can check the section in this forum for the M57 engines as well, also there are many videos in youtube about modding it. The m57 is really tough and here there are builds going for 600+hp reliably with tons of torque down low/where you usually drive in the city./

I just did a search for a 335d and they are more expensive and rare than the petrol variant, also in Germany! I'll keep looking if I ever find an occasion tho!

[sparkyte]

Originally Posted by vmqxdv

I just did a search for a 335d and they are more expensive and rare than the petrol variant, also in Germany! I'll keep looking if I ever find an occasion tho!

Both platforms are great so just keep looking for one but also keep in mind the costs of each.

[fastboatster]

Originally Posted by vmqxdv

Do you have any other brand suggestions?

I'm actually looking for other better dp brands myself.

[335i54n]

I would just get a b58 powered car and fbo it.

[vmqxdv]

Originally Posted by 335i54n

I would just get a b58 powered car and fbo it.

I really like the f32 over the f31 but it start to get pricey. The 3/440i have the b58 right?

[oVeRdOsE.]

Originally Posted by vmqxdv

I really like the f32 over the f31 but it start to get pricey. The 3/440i have the b58 right?

they are pricey and B58 issues start to ramp quickly now the warranties start to end.

Specifically the cam ledge/caps cracking that is starting. Persistent misfire, no compression. Broken camshaft. Its pretty wild lately.

While the old N engines are well documented and you can easily plan a contingency fund.

B58 might be better overall, but it's not that day n night